The incident occurred at the Route 91 Harvest Festival
At least 58 people have been killed and more than 500 injured in the deadliest mass shooting in modern U.S. history after a gunman opened fire at a country music festival in Las Vegas.
Hundreds of shots were reportedly fired over several minutes, causing festival goers to immediately flee the Route 91 Harvest Festival at around 22.30 (05.30 GMT).
The gunman, who has been named as 64-year-old Nevada resident Stephen Paddock, opened fire from the upper floors of the Mandalay Bay Hotel and Casino, with eyewitnesses reportedly seeing gun flashes before police stormed the building.
Police have confirmed Paddock’s death, and that he was a resident from the Las Vegas area.
They have also detained his female room mate, a woman called Marilou Danley who is 4ft 11ins tall.
As news of the shooting broke, eyewitnesses have shared videos of what appeared to be gunfire, while artists playing at the festival claimed to have heard shots ring out.
Posting on Twitter, Las Vegas Metropolitan Police Department wrote: “We’re investigating reports of an active shooter near/around Mandalay Bay Casino. Asking everyone to please avoid the area.”
The shooting occurred during a set by the popular US country singer Jason Aldean, who immediately left the stage after the incident.
Eyewitness Bryan Heifner told CNN how he witnessed the incident from his hotel window, situated directly opposite the Mandalay Bay resort.
“Mostly I heard the shots, just so many shots — I just thought it was a semi braking with the air brakes, but then I went downstairs and saw people running and looking for family,” he said.
“I immediately went back to my room, locked the door, turned the lights off.”
A number of musicians have paid tribute to the victims on social media, including Rihanna, Lady Gaga, Liam Gallagher and Chance The Rapper.
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President Donald Trump described the attack as “pure evil” in an address from the White House.